‘Variations’ are defined as combined variants, since they are not presupposed by, and do not presuppose, any definite entities as coexisting in the chain; variations contract combination.
- Hjelmslev (1961), a pag.82

If the articulation of a localized variety into variations is carried out down to the individual specimen, an irreducible variation is reached, and the articulation into variations is exhausted.
- Hjelmslev (1961), a pag.83

The “free” variants we shall here call ‘variations’, and the “bound” variants ‘varieties’.
- Hjelmslev (1961), a pag.82